Spring-wheel.



VV. E. SUPERNAW.

SPRING WHEEL.

APPLICATION FILED JANI26, 1916.

LLWIXP'K fz Hf ,f N f f 2b 2 pfff 0^ SPRING-WHEEL.

Specification of Letters Patent.

Patented Maty 30, 1916.

Original application led July 3, 1915, Serial No. 37,961. Divided and this application led January 26,

1916. Serial No. 74,374.

State of Illinois, have invented a new and useful Spring-VVheel, of which the following is a specification.

vThe device forming the subject matter of this application is a spring wheel and the present application discloses matter divided from my earlier application for Letters Patent on a tire, filed July 3, 1915, Serial No. 37 ,961.`

The objects of the present invention are to improve the spring means which is introduced between the inner and outer rims, and to provide novel means for assembling thesaid spring means with the inner and outer rims.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in vthe details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention. f

In the accompanying drawings -Figure l. shows the invention in side elevation, parts being broken away, and parts appean ing in section; Fig. 2 is a cross section' on the line 2 2 of Fig. 1.

In carrying out the present invention there is provided an inner rim 1 secured by means of bolts 2 to a felly 3 which may be lmade of wood if desired. In the inner rim 1, transverse openings 4 are formed, the same being adaptedto receive bolts 5 retaining 'annular side plates 6.

rlhe invention contemplates Athe use of an outer rim 7 which may be made of metal, the rim 7 being provided with inwardly projecting, V-shaped lugs 8- having openings 9 receiving bolts 1l holding inplace annular side plates 10, the side plates 10 being slidably overlapped ,on the side plates 6, and being provided with clencher flanges 12 Ywhich loverhang the outer rim 7 At one or more points on its circumference, thev outer rim 7 is supplied with an outwardly extended projection 14. A tire surrounds the outer rim 7 and is denoted generally by the numeral 15, the tire comprising a plurality of resilient blocks 16 which may be made of rubber, a rubber composition, or any other suitable substance. Certain of the tlre blocks are denoted by the numeral 17 and the blocks 17 are equipped with recesses 18 receiving the projection 14, to the end that the tiremay be prevented from creeping circumferentiallfy on the outer rim 7. Through the constituent blocks 16w-17 of the tire i`s extended a tightening member 19 which may be in form of a rod, the ends thereof being threaded as shown at 20 to receive a turnbuckle 21 which, it is to be observed is supported on the projection 14,

the blocks 17 being recessed as shown at 22, to receive the ends of the turnbuckle. The tire blocks are provided with clencher beads 23 which are engaged by the clencher flanges 12 of the side plates 10.

Disposed between the rims 7 and 1 are two or more circumferentially extended sets of springs, disposed out of alinement transversely of the wheel. Each spring comprises an inwardly projecting bend 24 flexed outwardly to form a seat engaging a transverse lug 51 on the inner rim 1 and a pair of outwardly projecting bends 25 engaging the rim 7 the outwardly projecting bends 25 terminating in inwardly projecting lingers 26 which abut against facing surfaces of the V-shaped lugs 8 on the outer rim 7. -Since the springsin the respective circumferential sets are not alined transversely of theJ wheel, the outwardly projecting bends 25 of the springs of the respective setsare disposed in crossed relation, as shown at 27, when the wheel is viewed sidewise.

Owing to the specific form of the springs and to the manner in which the same coact with' the inner and outer rims, the wheel will possess a maximum amount of resi'li ency, combined with the necessary r1gid1ty to withstand abnormal strains. The tightening device comprising the rod 19.and the p are of necessity weakened to a greater or ternating with the lugs of the inner rim;

and springs disposed between the rims, the springs comprising inwardly projecting bends iiexed outwardly to form seats receiving the lugs of the inner rim, the springs including outwardly projecting bends at the ends of the loops, the bends bearingagainst the outerl rim, the outwardly projecting bends terminating in inwardly extending fingers, the fingers of each spring bearing upon the facing surfaces of lugs on the outer rim, and the fingers of adjoining springs bearing against opposed faces of the same lug on the outer rim. A

In testimony that I claim the foregoing asvmy own, I have hereto affixed my signature in the presence of two witnesses.

WILLIAM E. SUPERNAW.

Witnesses i CIrAs. SUPERNAW, ELDoN LEE. 

